package com.alinesno.cloud.common.core.context;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * 工具类
 * @author LuoAnDong
 * @since 2018年8月5日 下午1:09:50
 */
@Component
public class ApplicationContextProvider implements ApplicationContextAware {
 
    private static ApplicationContext applicationContext = null;
 
    @Override
    public void setApplicationContext(ApplicationContext app) throws BeansException {
        if(applicationContext == null){
            applicationContext  = app ;
        }
    }
 
    //获取applicationContext
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }
 
    //通过name获取 Bean.
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
 
    }
 
    //通过class获取Bean.
    public static <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }
 
    //通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name,Class<T> clazz){
        return getApplicationContext().getBean(name, clazz);
    }
}
 
